diff --git a/.changeset/afraid-rivers-camp.md b/.changeset/afraid-rivers-camp.md
new file mode 100644
index 000000000000..748a699a65f4
--- /dev/null
+++ b/.changeset/afraid-rivers-camp.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/mdx': patch
+---
+
+Revert previous breaking change
diff --git a/packages/integrations/mdx/src/index.ts b/packages/integrations/mdx/src/index.ts
index 7012849a4921..577d073ee19b 100644
--- a/packages/integrations/mdx/src/index.ts
+++ b/packages/integrations/mdx/src/index.ts
@@ -74,7 +74,6 @@ export default function mdx(partialMdxOptions: Partial<MdxOptions> = {}): AstroI
 									const { data: frontmatter, content: pageContent } = parseFrontmatter(code, id);
 									const compiled = await mdxCompile(new VFile({ value: pageContent, path: id }), {
 										...mdxPluginOpts,
-										elementAttributeNameCase: 'html',
 										remarkPlugins: [
 											// Ensure `data.astro` is available to all remark plugins
 											toRemarkInitializeAstroData({ userFrontmatter: frontmatter }),
diff --git a/packages/integrations/mdx/test/mdx-plugins.test.js b/packages/integrations/mdx/test/mdx-plugins.test.js
index 139d2042f323..a3a871762b37 100644
--- a/packages/integrations/mdx/test/mdx-plugins.test.js
+++ b/packages/integrations/mdx/test/mdx-plugins.test.js
@@ -63,7 +63,7 @@ describe('MDX plugins', () => {
 		expect(selectRehypeExample(document)).to.not.be.null;
 	});
 
-	it('supports custom rehype plugins with namespaced attributes', async () => {
+	it.skip('supports custom rehype plugins with namespaced attributes', async () => {
 		const fixture = await buildFixture({
 			integrations: [
 				mdx({